Native funnel analytics — traffic, conversions, spend, CPL — recorded in real time on your own server.
Calc = touched the savings calculator · Wizard = opened signup · Lead = completed it. Each step as % of the previous.
Log what you actually spent per source (per day or per week — your call). CPL = spend ÷ leads within the selected window.
Value per lead = your own working estimate of what a monitoring signup is worth to the business. Stored locally, used only for this view.